9x^2+13x-32=0

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Solution for 9x^2+13x-32=0 equation:


Simplifying
9x2 + 13x + -32 = 0

Reorder the terms:
-32 + 13x + 9x2 = 0

Solving
-32 + 13x + 9x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
9 the coefficient of the squared term: 

Divide each side by '9'.
-3.555555556 + 1.444444444x + x2 = 0

Move the constant term to the right:

Add '3.555555556' to each side of the equation.
-3.555555556 + 1.444444444x + 3.555555556 + x2 = 0 + 3.555555556

Reorder the terms:
-3.555555556 + 3.555555556 + 1.444444444x + x2 = 0 + 3.555555556

Combine like terms: -3.555555556 + 3.555555556 = 0.000000000
0.000000000 + 1.444444444x + x2 = 0 + 3.555555556
1.444444444x + x2 = 0 + 3.555555556

Combine like terms: 0 + 3.555555556 = 3.555555556
1.444444444x + x2 = 3.555555556

The x term is 1.444444444x.  Take half its coefficient (0.722222222).
Square it (0.5216049380) and add it to both sides.

Add '0.5216049380' to each side of the equation.
1.444444444x + 0.5216049380 + x2 = 3.555555556 + 0.5216049380

Reorder the terms:
0.5216049380 + 1.444444444x + x2 = 3.555555556 + 0.5216049380

Combine like terms: 3.555555556 + 0.5216049380 = 4.077160494
0.5216049380 + 1.444444444x + x2 = 4.077160494

Factor a perfect square on the left side:
(x + 0.722222222)(x + 0.722222222) = 4.077160494

Calculate the square root of the right side: 2.019197983

Break this problem into two subproblems by setting 
(x + 0.722222222) equal to 2.019197983 and -2.019197983.

Subproblem 1

x + 0.722222222 = 2.019197983 Simplifying x + 0.722222222 = 2.019197983 Reorder the terms: 0.722222222 + x = 2.019197983 Solving 0.722222222 + x = 2.019197983 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.722222222' to each side of the equation. 0.722222222 + -0.722222222 + x = 2.019197983 + -0.722222222 Combine like terms: 0.722222222 + -0.722222222 = 0.000000000 0.000000000 + x = 2.019197983 + -0.722222222 x = 2.019197983 + -0.722222222 Combine like terms: 2.019197983 + -0.722222222 = 1.296975761 x = 1.296975761 Simplifying x = 1.296975761

Subproblem 2

x + 0.722222222 = -2.019197983 Simplifying x + 0.722222222 = -2.019197983 Reorder the terms: 0.722222222 + x = -2.019197983 Solving 0.722222222 + x = -2.019197983 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.722222222' to each side of the equation. 0.722222222 + -0.722222222 + x = -2.019197983 + -0.722222222 Combine like terms: 0.722222222 + -0.722222222 = 0.000000000 0.000000000 + x = -2.019197983 + -0.722222222 x = -2.019197983 + -0.722222222 Combine like terms: -2.019197983 + -0.722222222 = -2.741420205 x = -2.741420205 Simplifying x = -2.741420205

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.296975761, -2.741420205}

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